Algo Extensions

Auto-generated curated list for algo-extensions

46 problems•17 sections

Difficulty

Problem	Difficulty	Video
Roman To Integer	easy
Longest Palindrome	easy
Find All Duplicates in an Array	medium	-

Problem	Difficulty	Video
Permutation in String	medium	-

Problem	Difficulty	Video
Largest Number From Given Numbers	medium
Sort Characters By Frequency	medium	-

Problem	Difficulty	Video
Implement stack using queues	easy	-
Implement Queue using Stacks	easy	-
Next Greater Element 1	easy	-
Baseball Game	easy	-
Asteroid Collision	medium	-

Problem	Difficulty	Video
Search Insert Position in sorted array	easy	-
Find first and last positions of target element in sorted array	medium	-
Capacity To Ship Packages Within D Days	medium	-

Problem	Difficulty	Video
Remove duplicates from Sorted List 1	easy
Intersection of Two Linked Lists	easy	-
Remove Linked List Elements	easy	-
Palindrome Linked List	easy	-
Middle of the linked list	easy
Swap Nodes in Pairs	medium	-

Problem	Difficulty	Video
Symmetric Binary Tree	easy	-
Convert Sorted Array to height-balanced Binary Search Tree	easy
Path Sum 1 - Check if root to leaf path exists	easy	-
Merge Two Binary Trees	easy	-
Flatten binary tree to linked list in order of preorder traversal	medium	-
Replace Words	medium	-
Count Good Nodes in Binary Tree	medium	-

Problem	Difficulty	Video
Seat Reservation Manager	medium	-
Minimum Cost to Hire K Workers	hard

Problem	Difficulty	Video
Surrounded Regions	medium	-
Max Area of Island	medium	-
Open the Lock	medium	-

Problem	Difficulty	Video
Regular Expression Matching	hard	-
Distinct Subsequences	hard	-

Problem	Difficulty	Video
Minimum Triangle path sum from top to bottom	medium	-

Problem	Difficulty	Video
Merge Triplets to Form Target Triplet	medium	-

Problem	Difficulty	Video
Summary Ranges	easy	-

Problem	Difficulty	Video
Plus One 1 - Given number as array plus one	easy	-
Happy Number	easy	-
Multiply Strings	medium	-
Implement Power Function 1	medium	-
Detect Squares	medium	-

Problem	Difficulty	Video
Add Binary Strings	easy	-
Reverse Integer	medium	-

Problem	Difficulty	Video
Matrix Diagonal Sum	easy	-

Problem	Difficulty	Video
Evaluate Division	medium	-